Posting failed due to missing cost object.

What causes this issue?

The cost object information is missing on allocation level.

System Response

How to fix this error?

There are known root causes for this issue all of which are
configuration errors that need to be resolved in your SAP or Concur
system:
The cost object does not exist in the SAP system or was deleted:
Check for cost objects in the SAP system.
The cost object was not written on allocation level during the expense
report creation:
Check your Concur configuration settings to make sure
an allocation form is used
and
the copy down of the cost object information exists
The cost object wasn't selected by the end user:
Check the selection in your Concur system.
No cost object field mapping exists:
Check the settings in the <LS>Financial Posting</> wizard of your SAP
system.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.